Create URL hyperlink in R Shiny?

Question

My code:

library(shiny)
runApp(
  list(ui = fluidPage(
     uiOutput("tab")
    ),
  server = function(input, output, session){
    url <- a("Google Homepage", href="https://www.google.com/")
    output$tab <- renderUI({
      paste("URL link:", url)
    })
  })
)

Current output:

URL link: <a href="https://www.google.com/">Google Homepage</a>

Desired output:

URL link: Google Homepage

where Google Homepage is a clickable hyperlink.

I'm currently using the renderUI/uiOutput duo as instructed here: how to create a hyperlink interactively in shiny app?

score 55 · Accepted Answer · answered Feb 05 '17 at 05:44

55

By using paste, you're treating the url as a string. The function you want to use here is tagList:

runApp(
  list(ui = fluidPage(
     uiOutput("tab")
    ),
  server = function(input, output, session){
    url <- a("Google Homepage", href="https://www.google.com/")
    output$tab <- renderUI({
      tagList("URL link:", url)
    })
  })
)

answered Feb 05 '17 at 05:44

DeanAttali

25,268
10
92
118

How to ensure the url link is opened inside the SHiny app and not a new tab? – Lazarus Thurston Dec 13 '21 at 13:17

Seyma Kalay · Answer 2 · 2020-02-11T08:33:45.637

27

You can use html tags whatever you want to tag

    tags$a(href="www.rstudio.com", "Click here!")
## <a href="www.rstudio.com">Click here!</a>

edited Feb 11 '20 at 08:33

answered Feb 08 '20 at 11:40

Seyma Kalay

2,037
10
22

8

Also, to open it in a new browser, adding target="_blank" as argument. – entropy Oct 28 '20 at 22:51
would you know how to change the font size if we use your tags$a solution? Thanks – Angelo Dec 12 '22 at 14:25

Create URL hyperlink in R Shiny?

2 Answers2

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